| 矩形槽通道内周期性充分发展换热的研究 |
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| 引用本文： | 李凌,杨茉,余敏,卢玫. 矩形槽通道内周期性充分发展换热的研究[J]. 工程热物理学报, 2005, 26(4): 689-691 |
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| 作者姓名： | 李凌 杨茉 余敏 卢玫 |
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| 作者单位： | 上海理工大学动力工程学院,上海,200093;上海理工大学动力工程学院,上海,200093;上海理工大学动力工程学院,上海,200093;上海理工大学动力工程学院,上海,200093 |
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| 基金项目： | 国家自然科学基金;上海市教委资助项目;上海理工大学校科研和教改项目 |
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| 摘 要： | 本文应用数值模拟的方法研究了矩形槽通道内周期性充分发展换热情况及几何参数对流动和换热的影响.结果表明:当周期长度一定时,上下矩形突出部分的水平间距由小变大时,Nu和阻力系数f都是有所减小;周期长度一定且上下矩形突出部分水平间距相等时,增加矩形突出部分的宽度,Nu和阻力系数f会增加;当矩形突出部分的宽度一定, 并且水平交错均匀排列时,增加矩形突出部分的水平间距即增加周期长度时Nu减小,而f先是减小而后又有所增加.
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| 关 键 词： | 槽间距 矩形槽通道 对流换热 数值分析 |
| 文章编号： | 0253-231X(2005)04-0689-03 |
| 修稿时间： | 2005-03-20 |
THE STUDY OF THE PERIODICALLY FULLY DEVELOPED CONVECTION HEAT TRANSFER IN CHANNELS WITH GROOVED PARTS |
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| LI Ling,YANG Mo,YU Min,LU Mei. THE STUDY OF THE PERIODICALLY FULLY DEVELOPED CONVECTION HEAT TRANSFER IN CHANNELS WITH GROOVED PARTS[J]. Journal of Engineering Thermophysics, 2005, 26(4): 689-691 |
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| Authors: | LI Ling YANG Mo YU Min LU Mei |
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| Abstract: | The periodically fully developed convection heat transfer in channels with periodically grooved parts was simulated numerically in this paper. It was found that when the periodicity length is constant, Nu and the friction coefficient / will decrease with the increase of the level distance between the upper and lower rectangular salients. And when distance between the salients is also constant, Nu and / will increase with the increase of the salient width. It was also found that when the rectangular salient are arranged equidistantly and their widths are constant, Nu will decrease while / will decrease firstly and then increase again with the increase of the distance between them. |
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| Keywords: | distance between grooves grooved channel convection heat transfer numerical analysis |
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